Voivere Windmill Visitor Centre stands beside one of the Estonian points of the Struve Geodetic Arc, the 19th-century survey chain that helped measure the size and shape of the Earth. The scientific achievement is easy to miss on the ground, so the restored windmill and small visitor centre are useful because they turn an abstract UNESCO-listed measurement point into something a traveler can actually understand.
This is a niche stop rather than a headline attraction, best suited to visitors with a car and an interest in science, mapping, or unusual World Heritage sites. It can be combined with Rakvere, Simuna, or other countryside stops in Laane-Viru County. Check opening details before going, since small visitor centres may not keep city-museum hours.